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HOTS- 1 A cylindrical bar magnet is kept along the axis of a circular coil and near it as shown in figure H- 1. Will there be any induced emf at the terminals of the coil, when the magnet is rotated:

1. about its own axis [Figure H- 1(a)] and
2. about an axis perpendicular to the length of the magnet [Figure H- 1(b)].

HOTS- 2 A rectangular coil P is moved from a point A to another point B with a uniform velocity v through a region of a uniform magnetic field acting normally outwards as shown in figure H- 2. Show graphically:

1. the variation of magnetic flux associated with the coil with time
2. the variation of induced emf across points X and Y of the coil with time. Explain the nature of variation in magnetic flux as represented by the graph in first case.

HOTS - 3 A metallic rod PQ of length L and resistance R is free to slide without friction on two parallel rails lying perpendicular to a uniform magnetic field as shown in the figure H- 3. The rails are connected to a battery and a switch. Discuss the motion of the rod when the switch is closed.

HOTS - 4 A skeleton cube is formed by twelve wires of equal length L as shown in the figure H- 4. What will be the emf induced in each side?

HOTS - 5 An inductor having inductance L and resistance R connected in parallel to another resistance R and a battery through a switch as shown in the figure H- 5. Two identical bulbs are put in each arm in the circuit. Which of the bulbs lights up later when the switch is closed? Will glow of the bulbs be same at any instant?

HOTS - 6 An ideal inductor having inductance L connected in parallel to a resistance R and a battery through a switch as shown in the figure. Two identical bulbs are put in each arm in the circuit. Which of the bulbs lights up later when the switch is closed? Will glow of the bulbs be same after sufficiently long time (i.e. at steady state)?

CBSE Electromagnetic Induction ( With Hint / Solution)
Class XII (By Mr. Ashis Kumar Satapathy)
email - [email protected]

Electromagnetic Induction